Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/03/2024, 23:03

General

  • Target

    c711a7b74c62cbdcd059ec9421ecdc3e.dll

  • Size

    80KB

  • MD5

    c711a7b74c62cbdcd059ec9421ecdc3e

  • SHA1

    2c5d751748523f47897c4490f014e5e01b37d1bf

  • SHA256

    27ea524cc2f12cc4b9e70878667bcb8901e7d1548d0b1341b36b7722c056213b

  • SHA512

    8daaaf0b8496ce05fd66dfd1812b1b7fb63fc4c25d7954760bc708f018becad765b274dbfd52557d2ddbdb627199fc8844ed6a2b2496c80cd59dae059406c730

  • SSDEEP

    1536:T2lFYHQuwVlTS8uT4Dpd7kJNNV+ZA0J7Pt0s+96Ve5Uhm:TUA2lTS8ukDzAJNL+22F0s+9Ye50

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 30 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c711a7b74c62cbdcd059ec9421ecdc3e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c711a7b74c62cbdcd059ec9421ecdc3e.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3244
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:4692
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1764
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4568
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4568 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:3196

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\K4KS10IH\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\Windows\SysWOW64\rundll32Srv.exe

          Filesize

          52KB

          MD5

          17efb7e40d4cadaf3a4369435a8772ec

          SHA1

          eb9302063ac2ab599ae93aaa1e45b88bbeacbca2

          SHA256

          f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386

          SHA512

          522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450

        • memory/1764-15-0x0000000001ED0000-0x0000000001ED1000-memory.dmp

          Filesize

          4KB

        • memory/1764-16-0x00000000779D2000-0x00000000779D3000-memory.dmp

          Filesize

          4KB

        • memory/1764-17-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/1764-19-0x00000000779D2000-0x00000000779D3000-memory.dmp

          Filesize

          4KB

        • memory/3244-1-0x0000000010000000-0x0000000010018000-memory.dmp

          Filesize

          96KB

        • memory/3244-20-0x0000000010000000-0x0000000010018000-memory.dmp

          Filesize

          96KB

        • memory/4692-5-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/4692-6-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/4692-7-0x0000000000460000-0x0000000000462000-memory.dmp

          Filesize

          8KB

        • memory/4692-10-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB